LLDB_EXPORT_ALL_SYMBOLS is useful when building out-of-tree plugins and
extensions that rely on LLDB's internal symbols. For example, this is
how the Mojo language provides its REPL and debugger support.
Supporting this on windows is kind of tricky because this is normally
expected to be done using dllexport/dllimport, but lldb uses these with
the public api. This PR takes an approach similar to what LLVM does with
LLVM_EXPORT_SYMBOLS_FOR_PLUGINS, and what chromium does for
[abseil](253d14e20f/third_party/abseil-cpp/generate_def_files.py),
and uses a python script to extract the necessary symbols by looking at
the symbol table for the various lldb libraries.
267 lines
8.4 KiB
CMake
267 lines
8.4 KiB
CMake
get_property(LLDB_ALL_PLUGINS GLOBAL PROPERTY LLDB_PLUGINS)
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if(LLDB_BUILD_FRAMEWORK)
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set(option_install_prefix INSTALL_PREFIX ${LLDB_FRAMEWORK_INSTALL_DIR})
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set(option_framework FRAMEWORK)
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endif()
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if(LLDB_ENABLE_PYTHON)
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if (APPLE AND LLVM_ENABLE_LOCAL_SUBMODULE_VISIBILITY)
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# Work around an issue with the Python headers, which have a modular include
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# inside an extern "C" block.
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remove_module_flags()
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endif()
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get_target_property(python_bindings_dir swig_wrapper_python BINARY_DIR)
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set(lldb_python_wrapper ${python_bindings_dir}/LLDBWrapPython.cpp)
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endif()
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if(LLDB_ENABLE_LUA)
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get_target_property(lua_bindings_dir swig_wrapper_lua BINARY_DIR)
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set(lldb_lua_wrapper ${lua_bindings_dir}/LLDBWrapLua.cpp)
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endif()
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add_lldb_library(liblldb SHARED ${option_framework}
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SBAddress.cpp
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SBAttachInfo.cpp
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SBBlock.cpp
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SBBreakpoint.cpp
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SBBreakpointLocation.cpp
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SBBreakpointName.cpp
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SBBreakpointOptionCommon.cpp
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SBBroadcaster.cpp
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SBCommandInterpreter.cpp
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SBCommandInterpreterRunOptions.cpp
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SBCommandReturnObject.cpp
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SBCommunication.cpp
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SBCompileUnit.cpp
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SBData.cpp
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SBDebugger.cpp
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SBDeclaration.cpp
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SBEnvironment.cpp
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SBError.cpp
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SBEvent.cpp
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SBExecutionContext.cpp
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SBExpressionOptions.cpp
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SBFileSpec.cpp
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SBFile.cpp
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SBFileSpecList.cpp
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SBFrame.cpp
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SBFunction.cpp
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SBHostOS.cpp
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SBInstruction.cpp
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SBInstructionList.cpp
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SBLanguageRuntime.cpp
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SBLaunchInfo.cpp
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SBLineEntry.cpp
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SBListener.cpp
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SBMemoryRegionInfo.cpp
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SBMemoryRegionInfoList.cpp
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SBModule.cpp
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SBModuleSpec.cpp
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SBPlatform.cpp
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SBProcess.cpp
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SBProcessInfo.cpp
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SBQueue.cpp
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SBQueueItem.cpp
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SBReproducer.cpp
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SBScriptObject.cpp
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SBSection.cpp
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SBSourceManager.cpp
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SBStream.cpp
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SBStringList.cpp
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SBStructuredData.cpp
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SBSymbol.cpp
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SBSymbolContext.cpp
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SBSymbolContextList.cpp
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SBTarget.cpp
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SBThread.cpp
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SBThreadCollection.cpp
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SBThreadPlan.cpp
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SBTrace.cpp
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SBTraceCursor.cpp
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SBType.cpp
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SBTypeCategory.cpp
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SBTypeEnumMember.cpp
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SBTypeFilter.cpp
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SBTypeFormat.cpp
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SBTypeNameSpecifier.cpp
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SBTypeSummary.cpp
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SBTypeSynthetic.cpp
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SBValue.cpp
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SBValueList.cpp
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SBVariablesOptions.cpp
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SBWatchpoint.cpp
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SBWatchpointOptions.cpp
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SBUnixSignals.cpp
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SystemInitializerFull.cpp
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${lldb_python_wrapper}
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${lldb_lua_wrapper}
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LINK_LIBS
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lldbBreakpoint
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lldbCore
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lldbDataFormatters
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lldbExpression
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lldbHost
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lldbInitialization
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lldbInterpreter
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lldbSymbol
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lldbTarget
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lldbUtility
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lldbVersion
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${LLDB_ALL_PLUGINS}
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LINK_COMPONENTS
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Support
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${option_install_prefix}
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)
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# lib/pythonX.Y/dist-packages/lldb/_lldb.so is a symlink to lib/liblldb.so,
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# which depends on lib/libLLVM*.so (BUILD_SHARED_LIBS) or lib/libLLVM-10git.so
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# (LLVM_LINK_LLVM_DYLIB). Add an additional rpath $ORIGIN/../../../../lib so
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# that _lldb.so can be loaded from Python.
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if(LLDB_ENABLE_PYTHON AND (BUILD_SHARED_LIBS OR LLVM_LINK_LLVM_DYLIB) AND UNIX AND NOT APPLE)
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set_property(TARGET liblldb APPEND PROPERTY INSTALL_RPATH "\$ORIGIN/../../../../lib${LLVM_LIBDIR_SUFFIX}")
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endif()
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if(Python3_RPATH)
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set_property(TARGET liblldb APPEND PROPERTY INSTALL_RPATH "${Python3_RPATH}")
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set_property(TARGET liblldb APPEND PROPERTY BUILD_RPATH "${Python3_RPATH}")
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endif()
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if(LLDB_ENABLE_PYTHON)
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add_dependencies(liblldb swig_wrapper_python)
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if (MSVC)
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set_property(SOURCE ${lldb_python_wrapper} APPEND_STRING PROPERTY COMPILE_FLAGS " /W0")
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else()
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set_property(SOURCE ${lldb_python_wrapper} APPEND_STRING PROPERTY COMPILE_FLAGS " -w")
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endif()
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set_source_files_properties(${lldb_python_wrapper} PROPERTIES GENERATED ON)
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if (CLANG_CL)
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set_property(SOURCE ${lldb_python_wrapper} APPEND_STRING
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PROPERTY COMPILE_FLAGS " -Wno-unused-function")
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endif()
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if (LLVM_COMPILER_IS_GCC_COMPATIBLE AND
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NOT "${CMAKE_SYSTEM_NAME}" MATCHES "Darwin")
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set_property(SOURCE ${lldb_python_wrapper} APPEND_STRING
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PROPERTY COMPILE_FLAGS " -Wno-sequence-point -Wno-cast-qual")
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endif ()
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endif()
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if(LLDB_ENABLE_LUA)
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add_dependencies(liblldb swig_wrapper_lua)
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target_include_directories(liblldb PRIVATE ${LUA_INCLUDE_DIR})
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if (MSVC)
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set_property(SOURCE ${lldb_lua_wrapper} APPEND_STRING PROPERTY COMPILE_FLAGS " /W0")
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else()
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set_property(SOURCE ${lldb_lua_wrapper} APPEND_STRING PROPERTY COMPILE_FLAGS " -w")
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endif()
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set_source_files_properties(${lldb_lua_wrapper} PROPERTIES GENERATED ON)
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endif()
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set_target_properties(liblldb
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PROPERTIES
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VERSION ${LLDB_VERSION}
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)
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target_compile_definitions(liblldb PRIVATE LLDB_IN_LIBLLDB)
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if (NOT CMAKE_SYSTEM_NAME MATCHES "Windows")
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if (NOT LLDB_EXPORT_ALL_SYMBOLS)
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# If we're not exporting all symbols, we'll want to explicitly set
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# the exported symbols here. This prevents 'log enable --stack ...'
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# from working on some systems but limits the liblldb size.
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MESSAGE("-- Symbols (liblldb): exporting all symbols from the lldb namespace")
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add_llvm_symbol_exports(liblldb ${CMAKE_CURRENT_SOURCE_DIR}/liblldb.exports)
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else()
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# Don't use an explicit export. Instead, tell the linker to
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# export all symbols.
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MESSAGE("-- Symbols (liblldb): exporting all symbols from the lldb and lldb_private namespaces")
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add_llvm_symbol_exports(liblldb ${CMAKE_CURRENT_SOURCE_DIR}/liblldb-private.exports)
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endif()
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set_target_properties(liblldb_exports PROPERTIES FOLDER "lldb misc")
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elseif (LLDB_EXPORT_ALL_SYMBOLS)
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MESSAGE("-- Symbols (liblldb): exporting all symbols from the lldb and lldb_private namespaces")
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# Pull out the various lldb libraries linked into liblldb, these will be used
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# when looking for symbols to extract. We ignore plugin libraries here,
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# because these symbols aren't publicly exposed.
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get_target_property(all_liblldb_libs liblldb LINK_LIBRARIES)
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set(lldb_libs "")
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foreach(lib ${all_liblldb_libs})
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if(TARGET ${lib} AND ${lib} MATCHES "^lldb" AND
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NOT ${lib} MATCHES "^lldbPlugin")
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get_target_property(lib_type ${lib} TYPE)
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if("${lib_type}" STREQUAL "STATIC_LIBRARY")
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list(APPEND lldb_libs ${lib})
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endif()
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endif()
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endforeach(lib)
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list(REMOVE_DUPLICATES lldb_libs)
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# Extract all of the private symbols and produce a single file we can use for
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# the exports.
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set(exported_symbol_file ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/liblldb_private.symbols)
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get_host_tool_path(llvm-nm LLVM_NM llvm_nm_exe llvm_nm_target)
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add_custom_command(
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OUTPUT ${exported_symbol_file}
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COMMAND "${Python3_EXECUTABLE}"
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${LLDB_SOURCE_DIR}/scripts/msvc_extract_private_symbols.py
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${lldb_libs} -o ${exported_symbol_file} --nm=${llvm_nm_exe}
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WORKING_DIRECTORY ${LLVM_LIBRARY_OUTPUT_INTDIR}
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DEPENDS ${LLDB_SOURCE_DIR}/scripts/msvc_extract_private_symbols.py
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${lldb_libs} ${llvm_nm_target}
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VERBATIM
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COMMENT "Generating liblldb private export list"
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)
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add_llvm_symbol_exports(liblldb ${exported_symbol_file})
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set_target_properties(liblldb_exports PROPERTIES FOLDER "lldb misc")
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endif()
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if (NOT MSVC)
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set_target_properties(liblldb
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PROPERTIES
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OUTPUT_NAME lldb
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)
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endif()
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# The Clang expression parser in LLDB requires the Clang resource directory to function.
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if (TARGET clang-resource-headers)
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# If building alongside Clang, just add a dependency to ensure it is build together with liblldb.
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add_dependencies(liblldb clang-resource-headers)
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else()
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# In a standalone build create a symlink from the LLDB library directory that points to the
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# resource directory in the Clang library directory. LLDB searches relative to its install path,
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# and the symlink is created in the same relative path as the resource directory of Clang when
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# building alongside Clang.
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# When building the LLDB framework, this isn't necessary as there we copy everything we need into
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# the framework (including the Clang resourece directory).
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if(NOT LLDB_BUILD_FRAMEWORK)
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set(LLDB_CLANG_RESOURCE_DIR "$<TARGET_FILE_DIR:liblldb>/clang")
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add_custom_command(TARGET liblldb POST_BUILD
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COMMENT "Linking Clang resource dir into LLDB build directory: ${LLDB_CLANG_RESOURCE_DIR}"
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COMMAND ${CMAKE_COMMAND} -E create_symlink
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"${LLDB_EXTERNAL_CLANG_RESOURCE_DIR}" "${LLDB_CLANG_RESOURCE_DIR}"
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)
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endif()
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endif()
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if(LLDB_BUILD_FRAMEWORK)
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include(LLDBFramework)
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if (TARGET install-liblldb)
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add_dependencies(install-liblldb
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lldb-framework-cleanup)
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endif()
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if (TARGET install-liblldb-stripped)
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add_dependencies(install-liblldb-stripped
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lldb-framework-cleanup)
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endif()
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endif()
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